package com.xiaoke.security.controller;

import com.xiaoke.security.config.properties.ImageCodeProperties;
import com.xiaoke.security.config.properties.SecurityProperties;
import com.xiaoke.security.verificationCode.CreateImageCode;
import com.xiaoke.security.verificationCode.ImageCode;
import com.xiaoke.security.verificationCode.ValidateCodeGenerator;
import org.apache.commons.lang.RandomStringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.social.connect.web.HttpSessionSessionStrategy;
import org.springframework.social.connect.web.SessionStrategy;
import org.springframework.web.bind.ServletRequestUtils;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.context.request.ServletWebRequest;

import javax.imageio.ImageIO;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.util.Random;


/**
 * @Author 小柯
 * @Date 2019/11/3  15:56
 *
 * 图片验证码
 **/


@RestController
public class ValidateCodeController {

    @Autowired
    private SecurityProperties securityProperties;

    private CreateImageCode createImageCode = new CreateImageCode();

    public static final String SESSION_KEY = "SESSION_KEY_IMAGE_CODE";

    private SessionStrategy sessionStrategy = new HttpSessionSessionStrategy();

    @Autowired
    private ValidateCodeGenerator validateCodeGenerator;

    @GetMapping("/code/image")
    public void createCode(HttpServletRequest request, HttpServletResponse response) throws IOException {
        //## 根据随机数生成图片
        ImageCode imageCode = validateCodeGenerator.generate(new ServletWebRequest(request));
        //## 将随机数存到session中
        sessionStrategy.setAttribute(new ServletWebRequest(request), SESSION_KEY, imageCode);


         //## 再讲生成的图片写到接口的响应中
        ImageIO.write(imageCode.getImage(), "JPEG", response.getOutputStream());


    }


/*    private ImageCode createImageCode(HttpServletRequest request) {

        int width = 67;
        int height = 23;
        BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);

        Graphics g = image.getGraphics();

        Random random = new Random();

        g.setColor(getRandColor(200, 250));
        g.fillRect(0, 0, width, height);
        g.setFont(new Font("Times New Roman", Font.ITALIC, 20));
        g.setColor(getRandColor(160, 200));
        for (int i = 0; i < 155; i++) {
            int x = random.nextInt(width);
            int y = random.nextInt(height);
            int xl = random.nextInt(12);
            int yl = random.nextInt(12);
            g.drawLine(x, y, x + xl, y + yl);
        }

        String sRand = "";
        for (int i = 0; i < 4; i++) {
            String rand = String.valueOf(random.nextInt(10));
            sRand += rand;
            g.setColor(new Color(20 + random.nextInt(110), 20 + random.nextInt(110), 20 + random.nextInt(110)));
            g.drawString(rand, 13 * i + 6, 16);
        }

        g.dispose();

        return new ImageCode(image, sRand, 60);

    }

    private Color getRandColor(int fc, int bc) {
        Random random = new Random();
        if (fc > 255) {
            fc = 255;
        }
        if (bc > 255) {
            bc = 255;
        }
        int r = fc + random.nextInt(bc - fc);
        int g = fc + random.nextInt(bc - fc);
        int b = fc + random.nextInt(bc - fc);
        return new Color(r, g, b);
    }*/

}
